Robtex

Up: 91.205.64.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 91.205.64.0/23
Down right: 91.205.66.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.205.64.0	PTR	0.64.pcn.net.ua
91.205.64.18	PTR	ns3.pcn.net.ua
91.205.64.50	PTR	50.64.pcn.net.ua
91.205.64.50	A	ns.pcn.net.ua
91.205.64.50	A	www.pcn.com.ua
91.205.64.54	PTR	54.64.pcn.net.ua
91.205.64.78	PTR	78.64.pcn.net.ua
91.205.64.90	PTR	openteck.com.ua
91.205.64.90	A	www.berislav.net.ua
91.205.64.90	A	pchost.kahovka.net
91.205.64.106	PTR	poltergeist.customers.pcn.net.ua
91.205.64.226	PTR	226.64.pcn.net.ua
91.205.64.249	PTR	mt-stat.pcn.net.ua
91.205.65.3	PTR	3.65.pcn.net.ua
91.205.65.3	A	mail.alfaplus.com.ua
91.205.65.44	PTR	stat.doma.net.ua
91.205.65.44	A	r1.sn-jvh2oxu05-px8e.gvt1.com
91.205.65.44	A	r1.sn-jvh2oxu05-px8e.googlevideo.com
91.205.65.45	A	r2.sn-jvh2oxu05-px8e.gvt1.com
91.205.65.45	A	r2.sn-jvh2oxu05-px8e.googlevideo.com
91.205.65.56	PTR	aspect-nat.pcn.net.ua
91.205.65.76	PTR	76.65.pcn.net.ua
91.205.65.76	A	aktinos.com
91.205.65.77	PTR	77.65.pcn.net.ua
91.205.65.158	PTR	158.65.pcn.net.ua
91.205.65.202	PTR	domanet-w.customers.pcn.net.ua
91.205.65.206	PTR	mail.doma.net.ua
91.205.65.206	A	mail.yaltafilm.com
91.205.66.58	A+PTR	mail.zkem.com.ua
91.205.66.59	PTR	59.66.pcn.net.ua
91.205.66.59	A	ts.zkem.com.ua
91.205.66.86	PTR	86.66.pcn.net.ua
91.205.66.90	PTR	server2.pchost.com.ua
91.205.66.110	A+PTR	kadett.in.ua
91.205.66.110	A	www.kadett.in.ua
91.205.66.114	PTR	zwei.berislav.net.ua
91.205.66.150	PTR	150.66.pcn.net.ua
91.205.66.158	A+PTR	berislav.net.ua
91.205.66.162	A	speedtest.kahovka.net
91.205.66.198	PTR	198.66.pcn.net.ua
91.205.66.202	PTR	202.66.pcn.net.ua
91.205.66.234	PTR	234.66.pcn.net.ua
91.205.66.246	PTR	246.66.pcn.net.ua
91.205.67.114	PTR	114.67.pcn.net.ua
91.205.67.115	A	alfaplus.com.ua
91.205.67.116	PTR	116.67.pcn.net.ua
91.205.67.116	A	www.lubno.net.ua
91.205.67.116	A	lubno.net.ua
91.205.67.131	A	xn--80aaahd6bc2aacij3a8b.com
91.205.67.204	PTR	204.67.pcn.net.ua
91.205.67.204	A	ts.nkmehz.com.ua
91.205.67.206	PTR	206.67.pcn.net.ua
91.205.67.206	A	mail.nkmehz.com.ua
91.205.67.255	PTR	255.67.pcn.net.ua